CN103096259A - Point-to-point calling method and equipment in time division-synchronization code division multiple access (TD-SCDMA) long term evolution (TD-LTE) digital trunking system - Google Patents
Point-to-point calling method and equipment in time division-synchronization code division multiple access (TD-SCDMA) long term evolution (TD-LTE) digital trunking system Download PDFInfo
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Abstract
The invention provides a point-to-point calling method and equipment in a time division-synchronization code division multiple access (TD-SCDMA) long term evolution (TD-LTE) digital trunking system. The method comprises that an LTE core network receives information which is sent by calling user equipment (UE) and used for triggering point-to-point calling, and the information which is used for triggering point-to-point calling carries identification information of called UE; the LTE core network acquires business status information of the called UE in the digital trunking system according to the identification information of the called UE, confirms continuing point-to-point calling according to the business status information and continues the calling UE and the called UE after radio resource control (RRC) connection of the called UE is established; and the LTE core network establishes voice over and conducts calling and called services respectively with the calling UE and the called UE after continuing the calling UE and the called UE. According to the point-to-point calling method and the equipment in the TD-LTE digital trunking system, in the point-to-point calling process, additional introducing a circuit switched domain (CS) or an IP multimedia subsystem (IMS) in an existing TD-LTE system is of no need, and therefore cost and complexity can be lowered.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a point-to-point calling method and device in a Time division long Term Evolution (TD-LTE) digital trunking system.
Background
If the digital trunking communication system adopts the TD-LTE technology, in point-to-point calling, technically, there are currently three schemes that can provide Voice services, namely, Single Radio Voice Call Connectivity (SRVCC), Circuit domain FallBack (CSFB), and Voice over LTE (Voice over LTE) based on Long Term Evolution (LTE). However, the existing solution needs support of a Circuit Switch (CS) domain or an IP Multimedia Subsystem (IMS) domain, that is, the CS domain or the IMS domain needs to be introduced on the basis of the LTE core network.
Disclosure of Invention
The embodiment of the invention provides a point-to-point calling method and device in a TD-LTE digital trunking system, wherein a point-to-point calling is provided by an LTE core network without introducing a CS domain or an IMS domain.
The embodiment of the invention provides a point-to-point calling method in a TD-LTE digital trunking system, which comprises the following steps:
the LTE core network receives a message which is sent by calling UE and used for triggering point-to-point calling, wherein the message used for triggering point-to-point calling carries identification information of called UE;
the LTE core network acquires service state information of the called UE in a digital cluster system according to the identification information of the called UE, and continues the calling UE and the called UE after determining to continue the point-to-point calling and the RRC connection of the called UE is established according to the service state information;
after continuing the calling UE and the called UE, the LTE core network establishes voice bearer with the calling UE and the called UE respectively and performs calling and called call services.
The embodiment of the invention provides a point-to-point calling device in a TD-LTE digital trunking system, wherein the device is LTE core network equipment, and the device comprises:
a receiving unit, configured to receive a message sent by a calling UE and used for triggering a point-to-point call, where the message used for triggering the point-to-point call carries identification information of a called UE;
a processing unit, configured to obtain service state information of the called UE in a digital trunking system according to the identifier information of the called UE obtained by the receiving unit, and continue the calling UE and the called UE after determining to continue the point-to-point call and establishing an RRC connection of the called UE according to the service state information;
and the call unit is used for establishing voice bearer with the calling UE and the called UE respectively and performing calling and called call services after the processing unit continues the calling UE and the called UE.
According to the technical scheme, the voice service is directly provided by the LTE core network, a CS domain or an IMS domain does not need to be introduced, and the cost and the complexity are reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic flow chart of a method according to a first embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a method according to a first embodiment of the present invention, which includes:
step 11: the LTE core network receives a message which is sent by calling UE and used for triggering point-to-point calling, wherein the message used for triggering point-to-point calling carries identification information of called UE;
step 12: the LTE core network acquires service state information of the called UE in a digital cluster system according to the identification information of the called UE, and continues the calling UE and the called UE after determining to continue the point-to-point calling and the RRC connection of the called UE is established according to the service state information;
step 13: after continuing the calling UE and the called UE, the LTE core network establishes voice bearer with the calling UE and the called UE respectively and performs calling and called call services.
In the embodiment, the voice service is directly provided by the LTE core network, and a CS domain or an IMS domain does not need to be introduced, so that the cost and the complexity are reduced.
Fig. 2 is a schematic flow chart of a method according to a second embodiment of the present invention, which includes:
step 201: a calling User Equipment (UE) (denoted by UE1 in fig. 2) initiates a Point-To-Point (PTP) call To an LTE core network.
Specifically, the calling UE may send a Non-Access Stratum (NAS) layer message to an evolution base station (eNB) (denoted by eNB1 in fig. 2) where the calling UE is located, where the NAS layer message may specifically be a PTP SETUP (PTP SETUP) message. And then, the eNB where the calling UE is located forwards the PTP SETUP message to the LTE core network.
The PTP SETUP message sent by the calling UE may be carried in an RRC connection SETUP Complete (rrcconnectionsetup Complete) message in a Radio Resource Control (RRC) connection SETUP procedure. Or, when the RRC connection does not need to be established, the calling UE directly carries the PTP SETUP message in an Uplink information transfer (Uplink information transfer) message.
Specifically, the calling UE may initiate random access if the calling UE is in an IDLE (IDLE) state before initiating the point-to-point call, or if the calling UE is in a CONNECTED (CONNECTED) state and is in an Uplink out-of-step state, or there is no Uplink resource such as a Physical Uplink Control Channel (PUCCH).
For example, the random access procedure may include: the method comprises the steps that a calling UE sends a Random Access (RA) Preamble message to an eNB where the calling UE is located; the eNB where the calling UE is located returns a random access Response (RA Response) message to the calling UE; an eNB where calling UE is located sends an RRC Connection Request (RRC Connection Request) message to the calling UE; the calling UE sends an RRC Connection Setup Complete (RRC Connection Setup Complete) message to the eNB where the calling UE is located.
After the calling UE establishes RRC connection with the eNB where the calling UE is located, the eNB where the calling UE is located may carry the PTP SETUP MESSAGE in an initialization UE MESSAGE (INITIAL UE MESSAGE) and send the initialization UE MESSAGE to the LTE core network. The LTE core network may then perform authentication and security procedures with the calling UE.
Step 202: the LTE core network performs processing according to the current traffic state of the called UE (denoted by UE2 in fig. 2).
After the authentication and security of the calling UE pass, the context of the called UE can be queried according to the called number carried in the PTP SETUP message, so as to obtain the current service state of the called UE, and perform the following processing:
1) if the current service state is an idle state:
the LTE core network initiates a PAGING procedure, for example, the LTE core network sends a PTT PAGING (Push To Talk PAGING) message To an eNB (denoted by eNB2 in fig. 2) where the called UE is located, where the PTTPAGING message may carry an identifier of the called UE, for example, an International Mobile Subscriber Identity (IMSI) of the called UE. The eNB in which the called UE is located is the eNB in which the called UE is located, and may be obtained by the LTE core network by querying subscription information of the UE. The subsequent flow can be seen in the description below.
2) If the current service state is the group monitoring state
The LTE core network judges the priority of the group monitored by the called UE and the priority of the currently-performed point-to-point call, if the group priority is high, the LTE core network does not initiate the subsequent process, and the current process is finished. Wherein the priority can be preset.
If the priority of the point-to-point call is high, the LTE core network initiates a paging procedure, for example, the LTE core network sends PTT PAGING a message to the eNB where the called UE is located, where the message carries the IMSI of the called UE. The subsequent flow can be seen in the description below.
3) If the current service state is the group-initiated state
The LTE core network does not initiate called paging and rejects the call. At this time, the LTE core network may send a RELEASE (RELEASE) message to the calling UE, and the calling UE returns a RELEASE complete (RELEASE complete) message to the LTE core network after receiving the RELEASE message.
4) If the current service state is a Packet Switch (PS) service proceeding state
The LTE core network directly sends NAS information, such as a PTP SETUP message, to the called UE.
5) If the current service state is the group leader and PS service concurrence state (group leader + PS service)
The LTE core network does not initiate called paging and rejects the call. At this time, the LTE core network may send a RELEASE (RELEASE) message to the calling UE, and the calling UE returns a RELEASE complete (RELEASE complete) message to the LTE core network after receiving the RELEASE message.
6) If the current service state is the group monitoring and PS service concurrence state (group monitoring + PS service)
The LTE core network judges the priority of the group monitored by the called UE and the priority of the currently-performed point-to-point call, if the group priority is high, the LTE core network does not initiate the subsequent process, and the current process is finished.
If the priority of the point-to-point call is high, the LTE core network directly sends NAS information, such as PTPSETUP information, to the called UE. The subsequent procedures can be seen in the description below
7) If the current service state is the point-to-point service state
The LTE core network does not initiate called paging and rejects the call.
The relationship between the service state of the UE and the RRC state of the UE air interface is as follows: the IDLE state and the group monitoring state only for the group service correspond to the RRC IDLE state, and the rest are the RRC CONNECTION state.
Fig. 2 shows a procedure of Paging a called UE, that is, according to the processing result, if the called UE needs to be paged, the LTE core network sends PTT PAGING messages to the eNB where the called UE is located, and after receiving PTT PAGING messages, the eNB where the called UE is located sends Paging (Paging) messages on a Group Paging Control CHannel (GPCCH) according to the called IMSI carried in the messages.
Step 203: the called UE performs an RRC connection establishment procedure.
Wherein, can include: the called UE sends RA Preamble information to the eNB where the called UE is located; the eNB where the called UE is located returns an RA Response message to the called UE; an eNB where a called UE is located sends an RRC establishment Request (RRC Connection Request) message to the called UE; the called UE sends an RRC Connection Setup Complete (RRC Connection Setup Complete) message to the eNB where the called UE is located.
The RRC connection setup complete MESSAGE may carry a NAS dedicated service REQUEST (Trunk service REQUEST) MESSAGE, and then the eNB where the called UE is located may carry the Trunk service REQUEST MESSAGE in an initialization UE MESSAGE (INITIAL UE MESSAGE) and send the initialization UE MESSAGE to the LTE core network.
After receiving the Trunk SERVICE REQUEST message, the LTE core network may perform authentication and security procedures for the called UE.
In addition, the UE in the monitoring state needs to release the group resource immediately after receiving PAGING, and does not monitor the group any more.
Step 204: and the LTE core network continues the calling party and the called party after the RRC connection of the called UE is established.
Specifically, after the LTE core network performs authentication and security procedures on the called UE, it may determine that the RRC connection of the called UE is established, and after the RRC connection of the called UE is established, send a PTPSETUP message to the called UE, where the PTPSETUP message may carry information such as a host number; the called UE can display the calling number; the called UE responds to a PTP call confirmation (PTP CALCONFIRED) message to the LTE core network; meanwhile, the LTE core network sends a PTP call proceeding (PTPCALL proceeding) message to the calling UE, indicating that the call is continuing.
Step 205: and establishing calling and called voice service bearers.
The calling voice service bearer may specifically include: after the signaling process is completed, if the LTE core network determines that the called UE is in the group monitoring state or the idle state according to the foregoing steps, the LTE core network sends an initialization context SETUP REQUEST (initialization context REQUEST) message to the eNB where the calling UE is located, so as to establish an S1 context of the eNB where the calling UE is located for the point-to-point call and a Guaranteed Bit Rate (GBR) bearer of the voice service. The INITIAL CONTEXT SETUP REQUEST message carries related newly-established E-RAB connection parameters, and the newly-added parameter PTT Speaker indicates the eNB that the E-RAB is an E-RAB for point call; and carries the NAS message: and an ACTIVATE BEARER context request (ACTIVATE BEARER context request) message for notifying the UE NAS layer to ACTIVATE the dedicated BEARER, and the eNB establishes the Uu port dedicated resource after receiving the dedicated BEARER and initiates an RRC reconfiguration process.
The RRC reconfiguration procedure may include: an eNB where calling UE is located sends a Security Mode Command (Security Mode Command) message to the calling UE; the calling UE returns a Security Mode Command Complete message to the eNB where the calling UE is located; the eNB where the calling UE is located sends an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message to the calling UE; wherein, the RRC Connection Reconfiguration message may carry the active BEARER CONTEXT REQUEST (active BEARER CONTEXT REQUEST) message; calling UE configures layer 1, layer 2 and layer 3 (configure L1/L2/L3); the calling UE sends an RRC Connection reconfiguration complete (RRC Connection reconfiguration complete) message to the eNB where the calling UE is located.
After the RRC reconfiguration is completed, the calling UE sends an NAS message: and activating a BEARER CONTEXT RESPONSE (active BEARER CONTEXT RESPONSE) message to the LTE core network. The eNB where the calling UE is located sends an initialization context setup RESPONSE (INITIAL CONTEXTSETUP RESPONSE) message to the LTE core network.
The called voice service bearer and the calling voice service bearer are established in the same principle, and the equipment on the calling side is changed into the equipment on the called side.
Step 206: ringing, answering and talking.
After the voice service bearer of the calling party and the called party is established, the called party rings, the called UE sends a PTP ringing (PTP Alerting) message to the LTE core network, and then the LTE core network forwards the PTP ringing (PTP Alerting) message to the calling UE to prompt that the calling party rings.
After the called UE selects answering, the called UE sends a PTP connection (PTPCONNECT) message to the LTE core network, and then the LTE core network sends a PTP connection confirmation (PTPCONNECT ACK) message to the calling UE to prompt that the calling is connected.
Thereafter, the calling UE and the called UE may talk.
In the embodiment, the voice service is directly provided by the LTE core network, and a CS domain or an IMS domain does not need to be introduced, so that the cost and the complexity are reduced.
Fig. 3 is a schematic structural diagram of a device according to a third embodiment of the present invention, where the device is specifically an LTE core network device, and the device includes a receiving unit 31, a processing unit 32, and a calling unit 33; the receiving unit 31 is configured to receive a message sent by a calling UE and used for triggering a point-to-point call, where the message used for triggering the point-to-point call carries identification information of a called UE; the processing unit 32 is configured to obtain service state information of the called UE in the digital trunking system according to the identification information of the called UE obtained by the receiving unit 31, and continue the calling UE and the called UE after determining to continue the point-to-point call and establishing the RRC connection of the called UE according to the service state information; the call unit 33 is configured to establish a voice bearer with the calling UE and the called UE and perform a calling and called call service after the processing unit 32 continues the calling UE and the called UE.
Optionally, the processing unit is further configured to:
if the service state information indicates that the called UE is in an idle state currently, determining to continue point-to-point calling, and sending a paging message to the called UE through the eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is in a group monitoring state currently, comparing the priority of a group monitored by the called UE with the priority of a point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and sending a paging message to the called UE through an eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is currently in a group calling state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a PS service proceeding state, determining to continue the point-to-point calling and determining that the called UE has established RRC connection; or,
if the service state information indicates that the called UE is currently in a group calling and PS service concurrent state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a group monitoring and PS service concurrent state, comparing the priority of the group monitored by the called UE with the priority of the point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and determining that the called UE has established RRC connection.
Optionally, the processing unit is further configured to:
and receiving a special service request message sent by the eNB where the called UE is located, wherein the special service request message is the special service request message carried in the RRC connection establishment completion message by the called UE forwarded by the eNB where the called UE is located.
Optionally, the call unit is specifically configured to:
respectively establishing voice service load bearing special for point-to-point calling with an eNB where the calling UE is located and an eNB where the called UE is located, and indicating the eNB where the calling UE is located and the eNB where the called UE is located to respectively establish NAS layer special load bearing with the calling UE and the called UE;
after the called UE rings, receiving a PTP ringing message sent by the called UE and forwarding the PTP ringing message to the calling UE;
after the called UE answers, the PTP connection message sent by the called UE is received, and the PTP connection confirmation message is sent to the calling UE, so that the calling UE and the called UE can communicate.
In the embodiment, the voice service is directly provided by the LTE core network, and a CS domain or an IMS domain does not need to be introduced, so that the cost and the complexity are reduced.
It will be appreciated that the relevant features of the method and apparatus described above are referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A point-to-point calling method in a TD-LTE digital trunking system is characterized by comprising the following steps:
the LTE core network receives a message which is sent by calling UE and used for triggering point-to-point calling, wherein the message used for triggering point-to-point calling carries identification information of called UE;
the LTE core network acquires service state information of the called UE in a digital cluster system according to the identification information of the called UE, and continues the calling UE and the called UE after determining to continue the point-to-point calling and the RRC connection of the called UE is established according to the service state information;
after continuing the calling UE and the called UE, the LTE core network establishes voice bearer with the calling UE and the called UE respectively and performs calling and called call services.
2. The method of claim 1, wherein after obtaining the traffic status information of the called UE in a digital trunking system, the method further comprises:
if the service state information indicates that the called UE is in an idle state currently, determining to continue point-to-point calling, and sending a paging message to the called UE through the eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is in a group monitoring state currently, comparing the priority of a group monitored by the called UE with the priority of a point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and sending a paging message to the called UE through an eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is currently in a group calling state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a PS service proceeding state, determining to continue the point-to-point calling and determining that the called UE has established RRC connection; or,
if the service state information indicates that the called UE is currently in a group calling and PS service concurrent state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a group monitoring and PS service concurrent state, comparing the priority of the group monitored by the called UE with the priority of the point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and determining that the called UE has established RRC connection.
3. The method of claim 2, wherein after the called UE establishes the RRC connection after receiving the paging message, the method further comprises:
and the LTE core network receives a special service request message sent by the eNB where the called UE is located, wherein the special service request message is the special service request message carried in the RRC connection establishment completion message by the called UE forwarded by the eNB where the called UE is located.
4. The method of claim 1, wherein the establishing voice bearers with the calling UE and the called UE, respectively, comprises:
the LTE core network respectively establishes a voice service bearer dedicated to point-to-point calling with an eNB where the calling UE is located and an eNB where the called UE is located, and indicates the eNB where the calling UE is located and the eNB where the called UE is located to respectively establish NAS layer dedicated bearers with the calling UE and the called UE.
5. The method of claim 1, wherein performing the calling and called call services comprises:
after the called UE rings, the LTE core network receives PTP ringing messages sent by the called UE and forwards the PTP ringing messages to the calling UE;
after the called UE receives the call, the LTE core network receives the PTP connection message sent by the called UE and sends a PTP connection confirmation message to the calling UE so that the calling UE and the called UE can communicate.
6. The method of claim 1, wherein the message for triggering the point-to-point call is a PTP setup message of a NAS layer.
7. A point-to-point calling device in a TD-LTE digital trunking system is characterized in that the device is an LTE core network device, and the device comprises:
a receiving unit, configured to receive a message sent by a calling UE and used for triggering a point-to-point call, where the message used for triggering the point-to-point call carries identification information of a called UE;
a processing unit, configured to obtain service state information of the called UE in a digital trunking system according to the identifier information of the called UE obtained by the receiving unit, and continue the calling UE and the called UE after determining to continue the point-to-point call and establishing an RRC connection of the called UE according to the service state information;
and the call unit is used for establishing voice bearer with the calling UE and the called UE respectively and performing calling and called call services after the processing unit continues the calling UE and the called UE.
8. The device of claim 7, wherein the processing unit is further configured to:
if the service state information indicates that the called UE is in an idle state currently, determining to continue point-to-point calling, and sending a paging message to the called UE through the eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is in a group monitoring state currently, comparing the priority of a group monitored by the called UE with the priority of a point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and sending a paging message to the called UE through an eNB where the called UE is located so that the called UE establishes RRC connection after receiving the paging message; or,
if the service state information indicates that the called UE is currently in a group calling state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a PS service proceeding state, determining to continue the point-to-point calling and determining that the called UE has established RRC connection; or,
if the service state information indicates that the called UE is currently in a group calling and PS service concurrent state, determining that the point-to-point calling is not continued; or,
if the service state information indicates that the called UE is currently in a group monitoring and PS service concurrent state, comparing the priority of the group monitored by the called UE with the priority of the point-to-point call, if the priority of the point-to-point call is high, determining to continue the point-to-point call, and determining that the called UE has established RRC connection.
9. The device of claim 8, wherein the processing unit is further configured to:
and receiving a special service request message sent by the eNB where the called UE is located, wherein the special service request message is the special service request message carried in the RRC connection establishment completion message by the called UE forwarded by the eNB where the called UE is located.
10. The device of claim 7, wherein the telephony unit is specifically configured to:
respectively establishing voice service load bearing special for point-to-point calling with an eNB where the calling UE is located and an eNB where the called UE is located, and indicating the eNB where the calling UE is located and the eNB where the called UE is located to respectively establish NAS layer special load bearing with the calling UE and the called UE;
after the called UE rings, receiving a PTP ringing message sent by the called UE and forwarding the PTP ringing message to the calling UE;
after the called UE answers, the PTP connection message sent by the called UE is received, and the PTP connection confirmation message is sent to the calling UE, so that the calling UE and the called UE can communicate.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103780A1 (en) * | 2014-01-10 | 2015-07-16 | 华为技术有限公司 | Method and device for bearing circuit switched domain voice service |
| CN104936305A (en) * | 2014-03-18 | 2015-09-23 | 北京信威通信技术股份有限公司 | Processing method for RRC connection reestablishment of terminal in group calling |
| CN107438232A (en) * | 2016-05-25 | 2017-12-05 | 大唐移动通信设备有限公司 | A kind of cluster group UE service condition report and acquisition methods, device |
| WO2023193801A1 (en) * | 2022-04-08 | 2023-10-12 | 中国移动通信集团设计院有限公司 | Point-to-point communication service processing method and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7499702B2 (en) * | 2004-12-27 | 2009-03-03 | Sbc Knowledge Ventures, L.P. | Methods and apparatus to perform wireless peering in communication systems |
| CN102083013B (en) * | 2009-11-27 | 2013-01-30 | 普天信息技术研究院有限公司 | Method for realizing trunking traffic and trunking user terminal |
| CN101720114A (en) * | 2009-12-08 | 2010-06-02 | 中兴通讯股份有限公司 | Method and system for realizing AMR voice service under LTE system |
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2011
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103780A1 (en) * | 2014-01-10 | 2015-07-16 | 华为技术有限公司 | Method and device for bearing circuit switched domain voice service |
| CN104936305A (en) * | 2014-03-18 | 2015-09-23 | 北京信威通信技术股份有限公司 | Processing method for RRC connection reestablishment of terminal in group calling |
| CN107438232A (en) * | 2016-05-25 | 2017-12-05 | 大唐移动通信设备有限公司 | A kind of cluster group UE service condition report and acquisition methods, device |
| CN107438232B (en) * | 2016-05-25 | 2019-11-19 | 大唐移动通信设备有限公司 | A kind of service condition of cluster group UE report and acquisition methods, device |
| WO2023193801A1 (en) * | 2022-04-08 | 2023-10-12 | 中国移动通信集团设计院有限公司 | Point-to-point communication service processing method and system |
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| CN103096259B (en) | 2015-09-16 |
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